CN1432850A - Color filter substrate and its making process, liquid crystal display screen and electronic instrument - Google Patents
Color filter substrate and its making process, liquid crystal display screen and electronic instrument Download PDFInfo
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- CN1432850A CN1432850A CN03100199A CN03100199A CN1432850A CN 1432850 A CN1432850 A CN 1432850A CN 03100199 A CN03100199 A CN 03100199A CN 03100199 A CN03100199 A CN 03100199A CN 1432850 A CN1432850 A CN 1432850A
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
- G02F1/133555—Transflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Optical Filters (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The present invention provided a color filter substrate which can scatter light to be used for displaying with a simple construction, method for manufacturing the same, liquid crystal display panel and electronic equipment. Color filters 23 are disposed over a substrate so as to transmit light of a wavelength corresponding to a specified color, and an inner surface of each color filter is a rough surface 231 having ridges 232 and valleys 233. Further, pigment particle groups 235 in each of which a plurality of pigment particles 234 are aggregated are dispersed in each color filter 23.
Description
Technical field
The present invention relates to the electronic device of LCDs and this LCDs of use, the particularly colour filtering chip basic board and the manufacture method thereof of LCDs use.
Background technology
The LCDs of so-called reflection-type normally has the structure in reflection horizon on the substrate of rear side in a pair of substrate that liquid crystal is clipped in the middle.The basis of this structure is to see through liquid crystal and arrive the surface in reflection horizon from the substrate of observing side from observing the outer light such as sunshine that side incides on the LCDs, simultaneously by after this surface reflection to observing the side ejaculation.And, observe this emergent light by the observer and realize that reflection-type shows.The LCDs of reflection-type does not need light sources such as rear light, so, can realize low power consumption and slimming.
In addition, in recent years again motion the LCDs of peristome is set on the reflection horizon., except above-mentioned reflection-type shows, penetrate to observing side from the peristome in reflection horizon according to the LCDs of this structure, also can carry out so-called transmission-type and show by making the incident light (for example irradiates light of rear light unit) that comes from rear side.This LCDs is called Transflective, utilizes the transmission-type demonstration also can guarantee the visuality that shows outside in the inadequate environment of light.
Here, the surface of establishing the reflection horizon that these LCDs use is during as mirror-like, and the incident light of then observing side is after direct reflection takes place on the surface in reflection horizon, and the observed person is observed.Therefore, except the image that should show originally, near the people the observer also will see or the image of thing (below, this phenomenon is called " image of background "), show thereby be difficult for observing.Obtain good demonstration grade in order to avoid this background video, motion use the reflection horizon of surface roughening to make by to observing light that side penetrates the structure of scattering taking place moderately after this surface reflection.For example, if form on the substrate of side overleaf by resin material etc. constitute fine concavo-convex, the reflection horizon that film like is set simultaneously covers it, has then just formed the concavo-convex diffusing structure of reflection substrate surface on the surface in this reflection horizon.
But, when forming diffusing structure in this way, must be through following operation, that is, form the layer that constitutes by resin material at first overleaf on the substrate of side, secondly by this resin bed is carried out graphical treatment, form fine concavo-convex, on substrate, form the reflection horizon then, like this, just be difficult to suppress the raising of the complicated and cost of manufacturing process.
The present invention is exactly In view of the foregoing and motion that purpose aims to provide can utilize easy structure to make colour filtering chip basic board and the manufacture method of using for the LCDs of the light generation scattering that shows, the electronic device that uses this LCDs and this LCDs thereof.
Summary of the invention
In order to address the above problem, colour filtering chip basic board of the present invention is characterised in that: have mutually relatively and 1 substrate in a pair of substrate that liquid crystal is clipped in the middle and be arranged on the color filter of the light transmission that makes the wavelength with specific look corresponding on above-mentioned 1 substrate, the surface of this color filter is the uneven surface with jut and recess, and the population of having disperseed a plurality of particles aggregate to form.According to this colour filtering chip basic board, cause scattering to the incident light of this color filter incident by population, cause scattering simultaneously and then by the uneven surface on this color filter surface.On the other hand, be used to make the structure of light generation scattering when forming color filter, to obtain, so, do not need to be formed for making the parts (for example concavo-convex or scatter plate on surface, reflection horizon) of light generation scattering by other approach.Therefore, according to the present invention, utilize easy structure just can make light that scattering fully takes place.
In this colour filtering chip basic board, best above-mentioned population is the population that adopts a plurality of pigment particles aggegations corresponding with the look of above-mentioned color filter to form.Like this, compare, can realize that manufacturing process simplifies and reduce manufacturing cost with the structure that population that pigment particles is different is distributed in the color filter.Certainly, also can adopt the population that will the particles aggregate different forms to be distributed to structure in the color filter with pigment particles.As particle at this moment, can use for example acrylic resin material or SiO
2Or the particle that constitutes of the such inorganic oxide of ITO (tin indium oxide).Like this, when will the population different with pigment particles being distributed in the color filter, (1) can be distributed in the color filter equably for pigment particles, and (2) can carry out aggegation in the lump with pigment particles and this population.If adopt the structure of (2), compare with the structure that adopts (1), can obtain stronger scattering.Adopt which structure in (1) and (2) actually, can suitably select according to the degree of the scattering of the purposes of LCDs or requirement etc.
The substrate that this colour filtering chip basic board can be used as the LCDs of reflection-type or Transflective uses.Promptly, when using, can adopt the reflection of incident light layer that will be used to reflect another substrate-side to be arranged on above-mentioned 1 substrate structure on the face that above-mentioned color filter simultaneously is arranged on above-mentioned reflection horizon as the substrate that is positioned at rear side in a pair of substrate that constitutes these LCDs.In addition, colour filtering chip basic board of the present invention not only can be used as the substrate of the rear side of LCDs, also can be used as the substrate utilization of observing side.Like this, for LCDs,, just can avoid the background video that the direct reflection on surface, reflection horizon causes, thereby can obtain good demonstration grade if use colour filtering chip basic board of the present invention with reflection horizon.
In addition, in order to address the above problem, LCDs of the present invention is characterised in that: have mutually relatively and a pair of substrate that liquid crystal is clipped in the middle and be arranged on 1 substrate in the above-mentioned a pair of substrate and make the color filter of the light transmission of the wavelength with specific look corresponding, this color filter, its surface is the uneven surface with jut and recess, and the population of having disperseed a plurality of particles aggregate to form.According to this LCDs, cause scattering to the incident light of color filter incident by population, cause scattering simultaneously and then by the uneven surface on color filter surface.On the other hand, be used to make the structure of light generation scattering in the formation of color filter, to obtain, so, do not need to be formed for making the parts of light generation scattering by other approach.Therefore, just can make light generation scattering by easy structure.In this LCDs, also the same with above-mentioned colour filtering chip basic board, no matter be aggegation a plurality of pigment particles or aggegation with pigment particles different other particles corresponding, can use as the above-mentioned population that is distributed in the color filter with the look of color filter.
As using LCDs of the present invention, can consider the LCDs of reflection-type or Transflective.That is, can adopt above-mentioned 1 substrate that color filter will be set to use and the reflection of incident light layer that will reflect this 1 substrate-side is arranged on the structure on another substrate as the substrate of observing side.Perhaps, also can adopt above-mentioned 1 substrate that color filter will be set to use and the reflection of incident light layer that will reflect another substrate-side is arranged on the structure on this 1 substrate as the substrate of rear side.At this moment, color filter is positioned at the observation side with respect to the reflection horizon.According to these LCDs, not only the uneven surface on the population of color filter but also this color filter surface also can make to observing the ejaculation light generation scattering that side penetrates, so, can avoid the background video that the direct reflection on surface, reflection horizon causes effectively.In having the LCDs in reflection horizon, the incident light that makes rear side can be set on this reflection horizon to the peristome of observing the side transmission.Like this, can realize that not only reflection-type shows, but also can realize that transmission-type shows.
In addition, electronic device of the present invention is characterised in that: have above-mentioned LCDs.As mentioned above,, utilize easy structure can make for the light generation scattering that shows according to LCDs of the present invention, so, be particularly suitable for requiring manufacturing process to oversimplify and the electronic device of good demonstration grade.As such electronic device, for example computer and mobile phone etc. are arranged.Certainly, can use electronic device of the present invention and be not limited to these equipment,, can use the present invention the various electronic devices of LCDs as display part.
In addition, in order to address the above problem, the present invention is a manufacture method of making the colour filtering chip basic board of the color filter of 1 substrate having in a pair of substrate that liquid crystal is clipped in the middle and the light transmission that makes certain wavelengths, it is characterized in that: comprise and utilize the color filter that comprises the population that a plurality of particles aggregate form to form the 2nd operation that the 1st operation that forms color filter with constituent on the face of above-mentioned 1 substrate and the surface that makes the color filter that obtains by above-mentioned the 1st operation become the uneven surface with jut and recess.According to this method, in the formation of color filter, be formed for making the structure of light generation scattering, so the miscellaneous part different with color filter with formation is used to make the situation of light generation scattering to compare, can realizes the simplification of manufacturing process and reduce manufacturing cost.In above-mentioned the 2nd operation, by removing lip-deep a plurality of zones of the color filter that obtains by above-mentioned the 1st operation, the surface of this color filter is become have with this each regional corresponding concave part and with this zone beyond the uneven surface of regional corresponding jut.Certainly, the method for manufacturing color filter of the present invention is not limited to this method.
Description of drawings
Fig. 1 is the sectional view of structure of the LCDs of the expression embodiment of the invention 1.
Fig. 2 is the planimetric map of structure of the major part of this LCDs of expression.
Fig. 3 is with the sectional view shown in the color filter amplification of this LCDs.
Fig. 4 is with the sectional view shown in 1 color filter amplification of this LCDs.
Fig. 5 will form the sectional view of the color filter that forms with aqueous constituent shown in amplifying by the different color filter of the addition of spreading agent as the Comparative Examples of color filter shown in Figure 4.
Fig. 6 is that the expression color filter forms the curve map with the universal relation of the addition of the viscosity of aqueous constituent and spreading agent.
Fig. 7 is that the expression color filter forms the curve map with the measured result of the addition of the viscosity of aqueous constituent and spreading agent.
Fig. 8 is the sectional view of the manufacture process of this LCDs of expression.
Fig. 9 is the sectional view of the manufacture process of this LCDs of expression.
Figure 10 is the sectional view of structure of the LCDs of the expression embodiment of the invention 2.
Figure 11 is the sectional view of structure of LCDs of the Transflective of expression variation of the present invention.
Figure 12 is the sectional view of structure of LCDs of the Transflective of expression variation of the present invention.
Figure 13 is the skeleton view of expression as the structure of the computer of an example of the electronic device that uses LCDs of the present invention.
Figure 14 is the skeleton view of expression as the structure of the mobile phone of an example of the electronic device that uses LCDs of the present invention.
Embodiment
Below, with reference to the description of drawings embodiments of the invention.Such embodiment is expression a kind of form of the present invention, does not limit the present invention, can at random change within the scope of the invention.In each figure shown below, the size of each layer or each parts is adopted the degree that can discern on drawing, so, the ratio difference that each layer or each parts adopt.
A: embodiment 1.
A-1: the structure of LCDs
The embodiment 1 of the reflective liquid crystal display screen that applies the present invention to the passive matrix mode at first, is described with reference to Fig. 1.As shown in the figure, the structure of this LCDs 1a is that relative mutually the 1st substrate 10 and the 2nd substrate 20 pasted mutually by encapsulant 31, and for example the liquid crystal 32 of TN (twisted nematic) type or STN (STN Super TN) type etc. is sealing into by in two substrates and 31 area surrounded of encapsulant simultaneously.Below, as shown in Figure 1,, the 1st substrate 10 sides are labeled as " observation side " with respect to liquid crystal 32.That is the meaning of a side at the observer place of the display image of expression observation LCDs 1a.On the other hand, with respect to liquid crystal 32, the 2nd substrate 20 sides are labeled as " rear side ".
The 1st substrate 10 and the 2nd substrate 20 are plate-shaped members that glass or quartz, plastics etc. have transmitance.Wherein, on the surface, the outside (opposition side of liquid crystal 32) that is positioned at the 1st substrate 10 of observing side, phase difference film 101 that is used for the compensating interferometer look and the polaroid 102 that is used to make incident light generation polarization have been pasted.On the other hand, the opposite of liquid crystal 32 forms a plurality of common electrodes 11 in the 1st substrate 10.Here, Fig. 2 is exactly the planimetric map of the electrode structure of expression LCDs 1a.Sectional view and Fig. 1 of seeing from the A-A ' line of Fig. 2 are suitable.As depicted in figs. 1 and 2, each common electrode 11 is electrodes of the band shape of extending on directions X, is formed by for example ITO transparent conductive materials such as (tin indium oxides).
On the other hand, on the face of the 2nd substrate 20, be provided with a plurality of segmented electrodes 25.Each segmented electrode 25 is the same with common electrode 11, is the electrode of the band shape that formed by transparent conductive materials such as ITO, as depicted in figs. 1 and 2, extends in the direction (i.e. Y direction among the figure) of intersecting with common electrode 11.As shown in Figure 1, common electrode 11 and segmented electrode 25 are respectively by tendency film 12 and 26 coverings.Tendency film 12 and 26 is the organic films that formed by for example polyimide etc., the friction treatment of the direction of orientation of the liquid crystal 32 when having carried out being used to stipulating making alive not.
Be clipped in the liquid crystal 32 between the 1st substrate 10 and the 2nd substrate 20, its direction of orientation changes with the voltage that is added between common electrode 11 and the segmented electrode 25.Below, shown in the lower right-most portion of Fig. 2, be " sub-pixel 5 " with segmented electrode 25 relative zone markers with common electrode 11.That is the least unit in the zone that changes with institute's making alive of sub-pixel 5 direction of orientation that can be described as liquid crystal 32.As shown in Figure 2, a plurality of sub-pixels 5 are arranged in rectangular along directions X and Y direction, respectively with red (R), green (G) and blueness (B) in certain is of the same colour corresponding.And, constitute 1 pixel (picture point) suitable with the least unit of display image by the group of with above-mentioned 3 looks corresponding 3 sub-pixel 5R, 5G and 5B.
As shown in Figure 1, on face relative on the 2nd substrate 20, see that from the surface of the 2nd substrate 20 order is provided with reflection horizon 21, light shield layer 22, color filter 23 and overlayer 24 with liquid crystal 32.Wherein, reflection horizon 21 is to be the film that the alloy etc. of principal ingredient forms by for example aluminium or the such elemental metals of silver or with these metals, has light reflective.Incide outer light transmission the 1st substrate 10 and liquid crystal 32 arrival reflection horizon 21 such as sunshine on the LCDs 1a or room lighting light from observing side, simultaneously, by its surface reflection.This reflected light penetrates to observing side, is observed by the observer, and the result carries out reflection-type exactly and shows.The surface in the reflection horizon 21 of present embodiment is the tabular surface with diffusing structure (concavo-convex).
Secondly, light shield layer 22 forms clathrate, covers in order to the gap (that is, the zone that common electrode 11 is not relative with segmented electrode 25) that will be arranged in each rectangular sub-pixel 5, plays a part shading around each sub-pixel 5.For example the black resin material or the chromium metals such as (Cr) of carbon black form this light shield layer 22 by having disperseed.
Color filter 23 (23R, 23G and 23B) is the resin bed that is provided with accordingly with each sub-pixel 5, and promptly certain in red (R), green (G) and the blueness (B) is of the same colour to be colored as the look corresponding with the look of sub-pixel 5 respectively by pigment.Therefore, color filter 23 of all kinds makes the light transmission of the wavelength with its look corresponding selectively.In the present embodiment, the example of expression is the situation that constitutes the structure (so-called banded the arrangement) that adopts the whole-colored color filter 23 of arrangement in a plurality of sub-pixels 5 that are listed as at the bearing of trend of segmented electrode 25.
Here, Fig. 3 is the sectional view shown in color filter 23 is amplified, Fig. 4 be so that the part of 1 color filter 23 amplified shown in sectional view.As shown in the figure, the surface of color filter 23 of all kinds is the smooth uneven surfaces 231 with a large amount of juts (protuberance) 232 and recess 233.These juts 232 and recess 233 are dispersed in position at random on the surface of color filter 23.Here, as shown in Figure 4, if to the distance at the top of another jut 232 adjacent (in other words with this jut 232 from the top of 1 jut 232 on color filter 23 surfaces, being exactly to the distance of the bottom of another recess 233 adjacent from the bottom of 1 recess 233 with this recess 233) during for spacing P, the mean value that then spreads all over whole spacing P of color filter 23 is about 6.5 μ m～7.5 μ m.In addition, the distance at the top of the jut 232 when being set to bottom with recess 233 and being benchmark (in other words, the distance of the bottom of the recess 233 when the top with jut 232 is benchmark exactly) when being height H, the mean value that then spreads all over whole height H of color filter 23 is about 9 μ m.
On the other hand, in color filter of all kinds 23, disperseed the pigment particles corresponding 234 with this look.In addition, as shown in Figure 4, the part in these pigment particles 234 constitutes pigment particles group 235.This pigment particles group 235 is that a plurality of pigment particles 234 aggegations form, and its diameter is about 0.1 μ m.Below, describe the aggegation of pigment particles 234 in detail.
When utilization has disperseed the resin material of pigment particles 234 to form color filter 23,, generally be that spreading agent is blended in this resin material for these pigment particles 234 moderately are distributed in the resin material.Here, Fig. 6 be the expression sneaked into pigment particles 234 and spreading agent resin material (below, be labeled as " color filter form use aqueous constituent ") the curve map of viscosity and the general relation of the addition of spreading agent, Fig. 7 represents the curve map of color filter formation with the measured result of the addition of the viscosity of aqueous constituent and spreading agent.In these curve maps, transverse axis is represented the addition of spreading agent, and the longitudinal axis represents that color filter forms the viscosity with aqueous constituent.In addition, the addition of spreading agent is used with respect to mass percent (wt%) expression of color filter formation with aqueous constituent.
As shown in Figure 6, when increasing the addition of spreading agent, color filter forms viscosity with aqueous constituent and begins usually from continuing to reduce than higher value, then, and after reaching minimal value and transfer rising to.Particularly, as shown in Figure 7, with the addition of spreading agent when crossing of about 1wt% little by little increases in a small amount, the expression color filter form with the viscosity of aqueous constituent continue before the addition of about 3wt% to reduce, reach minimal value during addition then at about 3.5wt%, above transferring the such characteristic of rising behind the addition of about 4wt% to.Below, as shown in Figure 6 and Figure 7, form with the situation of the viscosity variation of aqueous constituent according to color filter the addition of spreading agent be divided into 3 intervals, and each interval mark is " the 1st interval C1 ", " the 2nd interval C2 " and " the 3rd interval C3 ".Promptly, the 1st interval C1 is that color filter forms with the high interval of the viscosity of aqueous constituent because spreading agent is very few, the 2nd interval C2 is that color filter forms near the interval of viscosity minimal value with aqueous constituent, and the 3rd interval C3 is that color filter forms the interval with the viscosity rising of aqueous constituent because spreading agent is too much.
Here, Fig. 5 forms the color filter 23 that forms with aqueous constituent as the figure shown in the Comparative Examples of color filter shown in Figure 4 23 by the color filter that the addition with spreading agent is taken as the value in the 2nd interval C2.As shown in Figure 5, when the addition of spreading agent was taken as value in the 2nd interval C2, each pigment particles 234 is aggegation and moderately disperseing mutually, is distributed to equably in the color filter 23.In contrast, the color filter 23 of the present embodiment shown in Figure 4 color filter that is taken as the value in the 1st interval C1 by the addition with spreading agent forms and forms with aqueous constituent.Like this, be taken as value in the 1st interval C1, a plurality of pigment particles 234 aggegations and constitute pigment particles group 235 by addition with spreading agent.
Test according to the present inventor is found, when not making color filter 23 irradiates lights of pigment particles generation aggegation as shown in Figure 5, scattering takes place in light hardly that see through this color filter 23, in contrast, when having the pigment particles group's 235 that a plurality of pigment particles 234 aggegations form color filter 23 irradiates lights as shown in Figure 4, the then transmitted light generation scattering of this color filter 23.This difference can be thought because following reason takes place.That is, when the incident light of pigment particles 234 equally distributed color filter 23 (Fig. 5) incidents sees through pigment particles 234 in this color filter 23, cause scattering owing to the refractive index of resin material and pigment particles 234 is different.But, owing to cancel out each other from the scattered light of equally distributed each pigment particles 234 same outgoing, the result, scattering just takes place in the emergent light of color filter 23 hardly.In contrast, scattering takes place in the incident light to color filter 23 incidents with pigment particles group 235 when seeing through the pigment particles 234 that constitutes pigment particles group 235, on the other hand, owing to pigment particles 234 is not evenly to distribute to have suppressed to cancel out each other effect in color filter 23, as a result, just penetrate scattered light from color filter 23.
In addition, find, when color filter 23 irradiates lights of surface roughening, see through pigment particles group 235 and penetrate from color filter 23 after the light of scattering taking place and then increasing the degree of scattering according to present inventor's test.Particularly, the color filter 23 that aggegations take place for pigment particles 234 color filter formed make such surface roughening shown in Figure 4 with aqueous constituent and (not roughening) color filter 23 that has an even surface have been checked their optical characteristics.Found that the color filter 23 of surface roughening can obtain high mist value by the smooth color filter 23 of specific surface.Particularly, between the color filter 23 of surface roughening and the color filter 23 that has an even surface, there is the difference of the mist value of about 70 (%)～80 (%).That is, as shown in Figure 4, become uneven surface 231, the structure of pigment particles 234 aggegations is compared, can make the emergent light of this color filter 23 that scattering further takes place with not making surface roughening by the surface that makes color filter 23.
Here, so-called mist value is illustrated in the value that the degree of scattering takes place, exactly by following formula definition (JIS (Japanese Industrial Standards) K6714-1977) when the incident light of a certain test portion incident sees through this test portion.
Mist value H=(the full light transmittance Tt of scattered light transmissivity Td/) * 100 (%)
Wherein, full light transmittance Tt is the value of the ratio of the expression light quantity that sees through this test portion here in the incident light quantity of test portion (being color filter 23) incident, and to be expression see through the value of the ratio of the light quantity (amount of scattered light) that the direction beyond above-mentioned assigned direction penetrates the light quantity of this test portion when the test portion irradiates light from assigned direction to scattered light transmissivity Td.Therefore, we can say if mist value H height that the degree of scattering is just big, on the contrary, if mist value H is low, then the degree of scattering is just little.
As mentioned above, according to present embodiment, because pigment particles 234 aggegations in the color filter 23 and the surface of this color filter 23 roughening, so, utilize this color filter 23 can make the abundant scattering of penetrating from LCDs 1a of light.Therefore, need be for 21 surfaces form concavo-convex and form fine concavo-convex operation on the surface of the 2nd substrate 20 or be formed for making the operation of the layer of light generation scattering in addition, the good demonstration grade of the image of the background that just can be inhibited in the reflection horizon.
A-2: the manufacture method of LCDs
Below, the manufacture method of the LCDs 1a of present embodiment is described with reference to Fig. 8 and Fig. 9.For each key element on Fig. 1 substrate, can use well-known various technology to make, so, omit its explanation, below, the manufacture method of each key element on the 2nd substrate 20 mainly is described.
At first, use formation such as sputtering method to have the film of the metal of light reflective, in order to whole covering with face that should be relative in the 2nd substrate 20 with the 1st substrate.Then, this film is carried out graphical treatment, form the reflection horizon 21 shown in Fig. 8 (a) by using photoetching process and corrosion technology.Secondly, utilize sputtering method etc. to form the film that constitutes by chromium (Cr), cover in order to the 2nd substrate 20 that will form reflection horizon 21.Then, this film is carried out graphical treatment, shown in Fig. 8 (b), form the overlapping cancellate light shield layer 22 in gap with each sub-pixel 5 by using photoetching process and corrosion technology.Here, be to utilize chromium to form light shield layer 22, still, also can use the resin material that is colored as black by carbon black etc. to form.In addition, the gap portion that also can be stacked to each sub-pixel 5 by the color filter 23 of 3 looks that the operation of back is formed forms light shield layer 22.
Then, as the following detailed description, order forms the color filter 23 of 3 red, green and blue looks on the face of the 2nd substrate 20.Here, be that the order of the color filter 23 by redness, green color filter 23, blue color filter 23 forms, still, the formation with color filter of all kinds 23 is not defined as said sequence in proper order.
At first, shown in Fig. 8 (c) like that, the color filter that utilizes whirl coating etc. will comprise spreading agent and red pigment based on acryl resin or epoxide resin material forms and is applied on the face of the 2nd substrate 20 formation resin bed 61 with aqueous constituent.As mentioned above, this color filter formation is Fig. 6 and the interior addition of the 1st interval C1 shown in Figure 7 with the addition adjusted of the spreading agent in the aqueous constituent.Therefore, in resin bed 61, just comprise the pigment particles group 235 that a plurality of pigment particles 234 aggegations form.Here, use the color filter of the resin material that comprises the negative-type that hardens by the light reaction of following exposure as base resin to form with aqueous constituent formation resin bed 61.As the material of pigment, can use azo lake system, condensation azo system, quinoline a word used for translation ketone system, isoindoline ketone system, perinon system, perylene system, insoluble azo system, phthalocyanine to be that the, dioxazine be, anthraquinone is or thioindigo system etc.In addition, as the material of spreading agent, can use magnesium stearate, aluminum foil stearate, calcium stearate, barium stearate, sclerosis ester acid zinc or Tissuemat E or as polyoxyethylene alkyl phenyl ether system, polyethylene glycol di system, sorbitan fatty acid ester system, fatty acid modified polyester system or the tertiary amine modified polyurethane system etc. of organic system material.
Secondly, shown in Fig. 8 (d), by mask 62 to resin bed 61 irradiation ultraviolet radiations.As shown in the figure, on mask 62 with resin bed 61 in should form red color filter 23R zone (promptly corresponding zone) with sub-pixel 5R formed the transmittance section 621 that ultraviolet ray is seen through overlappingly.In addition, ultraviolet exposure only is adjusted in the resin bed 61 part of thickness direction hardens by light reaction, promptly is not to spread all over the whole of thickness direction to harden.In Fig. 8 (d), the part of hardening by exposure process in the resin bed 61 is drawn hacures.
Then, shown in Fig. 9 (e), by the mask 63 different with aforementioned mask 62 to resin bed 61 irradiation ultraviolet radiations.As shown in the figure, on this mask 63, with the region overlapping that should become jut 232 in the zone that should form red color filter 23 R formed transmittance section 631.Therefore, after this exposure process, shown in Fig. 9 (e) hacures like that, harden in the zone that should become the jut 232 on color filter 23 surfaces in the resin bed 61.
Then, resin bed 61 is carried out development treatment, stay the part of hardening, remove resin bed 61 by exposure.By this developing procedure, shown in Fig. 9 (f), remove in the resin bed 61 part beyond the red color filter 23R, simultaneously a part of removing the thickness direction of this resin bed 61 in the color filter 23R surface of redness and recess 233 corresponding zones.As a result, just obtained the color filter 23R of surface for the redness of uneven surface with jut 232 and recess 233.
After this, according to Fig. 8 (c) and (d) and Fig. 9 (e) and (f) shown in same step, order forms green and blue color filter 23G and 23B.Carry out this a succession of operation repeatedly, shown in Fig. 9 (g), just can obtain redness, green and blue color filter 23R, 23G and the 23B that the surface has jut 232 and recess 233.
Then, each color filter 23 is heated to it more than heat distortion temperature.By this heating, the surface of color filter 23 takes place softening, and the bight of jut 232 and recess 233 becomes fillet by this thermal deformation.As a result, shown in Fig. 9 (h), the surface of color filter 23 just becomes the uneven surface 231 with smooth jut 232 and recess 233.
Then, utilize whirl coating etc. to be applied to epoxy resin or acrylic materials on the 2nd substrate 20 after, form overlayer 24 by sintering.In addition, on the face of overlayer 24, form the segmented electrode 25 that constitutes by ITO, simultaneously, form the alignment films 26 that covers in order to these segmented electrodes 25, and carry out friction treatment.
More than, be exactly the manufacture method of each key element on the 2nd substrate 20.After, will paste mutually making under the relative state of electrode forming surface by this method the 2nd substrate 20 that obtains and the 1st substrate 10 that has formed common electrode 11 and alignment films 12 by encapsulant 31.And, after the peristome on being arranged on encapsulant 31 211 injects liquid crystal 32,, by phase difference film 101 and polaroid 102 are pasted on the 1st substrate 10, just can obtain LCDs 1a shown in Figure 1 simultaneously with this part sealing.
Like this, according to the manufacture method of present embodiment, be used to make the structure of the emergent light generation scattering of LCDs 1a when color filter 23 forms, to form.Therefore, compare, can simplify manufacturing process, thereby can reduce manufacturing cost with the situation that forms the scattering layer that makes light generation scattering by the operation different with color filter 23.
B: embodiment 2.
Below, the structure of the LCDs of the embodiment of the invention 2 is described with reference to Figure 10.Be marked with identical symbol with the common part of the LCDs 1a of above-mentioned embodiment 1 shown in Figure 1 in the each several part shown in Figure 10.
In the above-described embodiments, shown structure is to form color filter 23, light shield layer 22 and overlayer 24 on the face of the 2nd substrate 20 that is positioned at rear side.In contrast, in the LCDs 1b of present embodiment, as shown in figure 10, be on the face that is positioned at the 1st substrate 10 of observing side, these key elements to be set.
That is, in the 1st substrate 10 on the face relative, be provided with the overlapping light shield layer 22 of the gap portion of each sub-pixel 5 and be certain color filter of the same colour 23 in red, green or the blueness by pigment coloring with liquid crystal 32.The color filter 23 of present embodiment and Fig. 3 and color filter 23 shown in Figure 4 are the same, and the surface is the uneven surface 231 that is made of fine jut 232 and recess 233, simultaneously, and the pigment particles group 235 who has disperseed a plurality of pigment particles 234 aggegations to form.
In addition, as shown in figure 10, the surface that has formed the 1st substrate 10 of color filter 23 and light shield layer 22 is covered by overlayer 24.And common electrode 11 is arranged on the surface of overlayer 24, and alignment films 12 covers on this overlayer 24.The color filter 23 of the LCDs 1b of present embodiment by with in the foregoing description 1, make with reference to the same process of Fig. 8 and Fig. 9 explanation.
On the other hand, the reflection horizon 21 that is arranged on the inner surface of the 2nd substrate 20 is covered by the insulation course 27 that resin material etc. constitutes.Segmented electrode 25 and alignment films 26 are arranged on the face of this insulation course 27.
Like this, utilize color filter 23 is set in place structure on the 1st substrate 10 of observing side, also can obtain the effect identical with the foregoing description 1.Promptly, colour filtering chip basic board of the present invention, observe side or be configured in rear side no matter be configured in, all be meant to have that the surface is the substrate of the color filter 23 of roughening face when being formed by the resin material that comprises the pigment particles group 235 that a plurality of pigment particles 234 aggegations form.
C: variation.
More than, 1 embodiment of the present invention has been described, still, the foregoing description is 1 example, for the foregoing description, can carry out various distortion in the scope that does not break away from purport of the present invention.As variation, can consider for example following situation.
C-1: variation 1.
In the various embodiments described above, the LCDs 1a and the 1b of reflection-type has been described, except reflection-type shows, both can apply the present invention to transmission-type and show the LCDs that also can be applied to possible Transflective.That is LCDs 1c, for example shown in Figure 11 is provided with the reflection horizon 21 with peristome 211 to replace 21 while of the reflection horizon phase difference film 201 of LCDs 1a shown in Figure 1 and the lip-deep structure that polaroid 202 pastes the 2nd substrate 20.According to this structure, the incident light of the 1st substrate 10 sides is carried out reflection-type and is shown by the surface reflection of reflection horizon 21 (part beyond the peristome 211).On the other hand, the peristome 211 of irradiates light by reflection horizon 21 that is configured in the rear light unit (not shown) of rear side penetrates to observing side, like this, just realized the transmission-type demonstration.Equally, LCDs 1d shown in Figure 12 is provided with the reflection horizon 21 with peristome 211 to replace 21 while of the reflection horizon phase difference film 201 of LCDs 1b shown in Figure 10 and the lip-deep structure that polaroid 202 pastes the 2nd substrate 20.According to this structure, the same with LCDs 1c shown in Figure 11, also suitably the toggle reflections type shows and the transmission-type demonstration.In the LCDs 1c and 1d of Figure 11 and Transflective shown in Figure 12, have pigment particles group 235 and make the color filter 23 of surface by using as the roughening face, can obtain the effect same with the various embodiments described above.
In this variation, adopted and utilized reflection horizon 21 to realize the structure that reflection-type shows and transmission-type shows with peristome 211, but, also can apply the present invention to replace such reflection horizon 21 and a part in the light of irradiation is seen through and the LCDs of the Transflective of the so-called half-reflecting mirror of reflection another part.
C-2: variation 2.
In the various embodiments described above and variation, the situation of using the pigment particles group 235 that pigment particles 234 aggegations corresponding with the look of this color filter form as the population of the transmitted light generation scattering that is used to make color filter has been described, but, color filter of the present invention is not limited thereto kind of a situation, in color filter, the population that also can disperse other particles aggregate different to form with pigment particles.As this particle, for example can use the particle that constitutes by acrylic materials or by SiO
2Or the particle that constitutes of the such inorganic oxidation material of ITO (tin indium oxide).
C-3: variation 3.
In the above-described embodiments, the LCDs of the passive matrix mode that does not have on-off element has been described, but, can certainly apply the present invention to have with TFD (thin film diode) and be the two-terminal type on-off element of representative or be the LCDs of active matrix mode of three terminal type on-off elements of representative with TFT (thin film transistor (TFT)).In addition, in the various embodiments described above, the banded structure arranged that adopts whole-colored color filter 23 to constitute row has been described, still, in addition the form as the arrangement of color filter 23 also can adopt to inlay and arrange or rounded projections arranged.Like this, so long as the LCDs that has formed the colour filtering chip basic board of color filter 23 and used this colour filtering chip basic board just, no matter the form of other textural elements how, can be used the present invention.
D: electronic device
Below, the electronic device that uses LCDs of the present invention is described.
D-1: mobile model computer
At first, the example that LCDs of the present invention is applied to the display part of portable computer (so-called laptop) is described.Figure 13 is the skeleton view of the structure of expression computer.As shown in the figure, computer 91 has body 912 that comprises keyboard 911 and the display part 913 of using LCDs of the present invention.In such computer, also should guarantee the visuality that shows outside in the inadequate environment of light, preferably use side overleaf to have the LCDs 1c or the 1d (referring to Figure 11 or Figure 12) of the Transflective of rear light unit.
D-2: mobile phone
Below, the example that LCDs of the present invention is applied to the display part of mobile phone is described.Figure 14 is the skeleton view of the structure of expression mobile phone.As shown in the figure, mobile phone 92 also has receiver 922, transmitter 923 and uses the display part 924 of LCDs of the present invention except a plurality of action buttons 921.In this mobile phone,, preferably use the LCDs 1c or the 1d of Transflective in order to ensure the visuality of in the dark demonstration.
As the electronic device that can use LCDs of the present invention, except computer shown in Figure 13 and mobile phone shown in Figure 14, also have the video camera, car steering guide piece, pager, electronic notebook, counter, word processor, workstation, videophone, POS terminal, digital camera of LCD TV, view finder formula and monitor direct viewing type etc.
According to LCDs of the present invention, utilize easy structure just can prevent the image of background, so, be particularly suitable for requiring reducing the electronic device of manufacturing cost and good demonstration grade.
As mentioned above, according to the present invention, utilize easy structure just can make for the light generation scattering that shows.
Claims (11)
1. colour filtering chip basic board, 1 substrate in a pair of substrate that it is characterized in that having mutually relatively and liquid crystal is clipped in the middle and be arranged on the color filter of the light transmission that makes the wavelength corresponding on above-mentioned 1 substrate with specific look, this color filter, its surface is the uneven surface with jut and recess, and the population of having disperseed a plurality of particles aggregate to form.
2. by the described colour filtering chip basic board of claim 1, it is characterized in that: above-mentioned population is that a plurality of pigment particles aggegations corresponding with the look of above-mentioned color filter form.
3. by the described colour filtering chip basic board of claim 1, it is characterized in that: have the reflection of incident light layer that is used to reflect another substrate-side that is arranged on above-mentioned 1 substrate, above-mentioned color filter is arranged on the face in above-mentioned reflection horizon.
4. LCDs, the a pair of substrate that it is characterized in that having mutually relatively and liquid crystal is clipped in the middle and be arranged on 1 substrate in the above-mentioned a pair of substrate and make the color filter of the light transmission of the wavelength corresponding with specific look, this color filter, its surface is the uneven surface with jut and recess, and the population of having disperseed a plurality of particles aggregate to form.
5. by the described LCDs of claim 4, it is characterized in that: above-mentioned population is that a plurality of pigment particles aggegations corresponding with the look of above-mentioned color filter form.
6. by the described LCDs of claim 4, it is characterized in that: having being used on another substrate that is arranged in the above-mentioned a pair of substrate reflects the reflection of incident light layer of above-mentioned 1 substrate-side.
7. by the described LCDs of claim 4, it is characterized in that: have the reflection of incident light layer that is arranged on another substrate-side of reflection on above-mentioned 1 substrate, above-mentioned color filter is arranged on the observation side with respect to above-mentioned reflection horizon.
8. by claim 6 or 7 described LCDs, it is characterized in that: above-mentioned reflection horizon has the incident light of the rear side of making to observing the peristome that side sees through.
9. an electronic device is characterized in that: have the described LCDs of claim 4.
10. a manufacturing has 1 substrate in a pair of substrate that liquid crystal is clipped in the middle and makes the manufacture method of colour filtering chip basic board of color filter of the light transmission of certain wavelengths, it is characterized in that: comprise and utilize the color filter that comprises the population that a plurality of particles aggregate form to form the 2nd operation that the 1st operation that forms color filter with constituent on the face of above-mentioned 1 substrate and the surface that makes the color filter that obtains by above-mentioned the 1st operation become the uneven surface with jut and recess.
11. manufacture method by the described colour filtering chip basic board of claim 10, it is characterized in that: in above-mentioned the 2nd operation, by removing lip-deep a plurality of zones of the color filter that obtains by above-mentioned the 1st operation, the surface of this color filter is become have with this each regional corresponding concave part and with this zone beyond the uneven surface of regional corresponding jut.
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|---|---|---|---|
| JP007184/2002 | 2002-01-16 | ||
| JP2002007184A JP3812444B2 (en) | 2002-01-16 | 2002-01-16 | Method for manufacturing color filter substrate and method for manufacturing liquid crystal display panel |
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| CN1432850A true CN1432850A (en) | 2003-07-30 |
| CN1278168C CN1278168C (en) | 2006-10-04 |
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| CNB031001998A Expired - Lifetime CN1278168C (en) | 2002-01-16 | 2003-01-10 | Color filter substrate and its making process, liquid crystal display screen and electronic instrument |
| CNU032011571U Expired - Lifetime CN2607594Y (en) | 2002-01-16 | 2003-01-13 | Colour filter plate base plate, liquid crystal display screen and electronic apparatus |
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| CNU032011571U Expired - Lifetime CN2607594Y (en) | 2002-01-16 | 2003-01-13 | Colour filter plate base plate, liquid crystal display screen and electronic apparatus |
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| US (1) | US6924857B2 (en) |
| JP (1) | JP3812444B2 (en) |
| KR (1) | KR100510626B1 (en) |
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| CN101201499B (en) * | 2006-12-12 | 2011-09-28 | 三星电子株式会社 | Liquid crystal display device |
| CN103221849A (en) * | 2010-11-19 | 2013-07-24 | Jsr株式会社 | Method for producing color filter, display element, and color filter |
| CN104635370A (en) * | 2013-11-08 | 2015-05-20 | 联想(北京)有限公司 | Color filter film and color display comprising same |
| CN109828407A (en) * | 2019-04-10 | 2019-05-31 | 惠科股份有限公司 | Colored filter substrate, display device and backlight type display device |
| WO2020238841A1 (en) * | 2019-05-30 | 2020-12-03 | 京东方科技集团股份有限公司 | Display substrate, fabrication method therefor, and display panel |
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- 2002-01-16 JP JP2002007184A patent/JP3812444B2/en not_active Expired - Lifetime
- 2002-12-30 TW TW091137871A patent/TW594238B/en not_active IP Right Cessation
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2003
- 2003-01-06 US US10/337,259 patent/US6924857B2/en not_active Expired - Lifetime
- 2003-01-10 CN CNB031001998A patent/CN1278168C/en not_active Expired - Lifetime
- 2003-01-13 CN CNU032011571U patent/CN2607594Y/en not_active Expired - Lifetime
- 2003-01-15 KR KR10-2003-0002588A patent/KR100510626B1/en active IP Right Grant
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| CN101201499B (en) * | 2006-12-12 | 2011-09-28 | 三星电子株式会社 | Liquid crystal display device |
| CN103221849A (en) * | 2010-11-19 | 2013-07-24 | Jsr株式会社 | Method for producing color filter, display element, and color filter |
| CN103221849B (en) * | 2010-11-19 | 2016-07-06 | Jsr株式会社 | The manufacture method of color filter, display element and color filter |
| CN104635370A (en) * | 2013-11-08 | 2015-05-20 | 联想(北京)有限公司 | Color filter film and color display comprising same |
| CN104635370B (en) * | 2013-11-08 | 2017-11-28 | 联想(北京)有限公司 | Color filter film and the color monitor including the color filter film |
| CN109828407A (en) * | 2019-04-10 | 2019-05-31 | 惠科股份有限公司 | Colored filter substrate, display device and backlight type display device |
| WO2020238841A1 (en) * | 2019-05-30 | 2020-12-03 | 京东方科技集团股份有限公司 | Display substrate, fabrication method therefor, and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN2607594Y (en) | 2004-03-24 |
| US6924857B2 (en) | 2005-08-02 |
| TW200302376A (en) | 2003-08-01 |
| JP3812444B2 (en) | 2006-08-23 |
| CN1278168C (en) | 2006-10-04 |
| KR100510626B1 (en) | 2005-08-31 |
| JP2003207614A (en) | 2003-07-25 |
| TW594238B (en) | 2004-06-21 |
| US20030147026A1 (en) | 2003-08-07 |
| KR20030062269A (en) | 2003-07-23 |
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Effective date of registration: 20160526 Address after: Hongkong, China Patentee after: BOE Technology (Hongkong) Co.,Ltd. Address before: Tokyo, Japan Patentee before: Seiko Epson Corp. Effective date of registration: 20160526 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE TECHNOLOGY GROUP Co.,Ltd. Address before: Hongkong, China Patentee before: BOE Technology (Hongkong) Co.,Ltd. |
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